remove unused dwc2_critical.h

src/portable/synopsys/dwc2/dwc2_critical.h

@@ -1,25 +0,0 @@
-/*
- * SPDX-FileCopyrightText: 2025 Espressif Systems (Shanghai) CO LTD
- *
- * SPDX-License-Identifier: Apache-2.0
- */
-
-#ifndef TUSB_DWC2_CRITICAL_H_
-#define TUSB_DWC2_CRITICAL_H_
-
-#include "common/tusb_mcu.h"
-
-#if defined(TUP_USBIP_DWC2_ESP32)
-  #include "freertos/FreeRTOS.h"
-  static portMUX_TYPE dcd_lock = portMUX_INITIALIZER_UNLOCKED;
-  #define DCD_ENTER_CRITICAL()    portENTER_CRITICAL(&dcd_lock)
-  #define DCD_EXIT_CRITICAL()     portEXIT_CRITICAL(&dcd_lock)
-
-#else
-  // Define critical section macros for DWC2 as no-op if not defined
-  // This is to avoid breaking existing code that does not use critical section
-  #define DCD_ENTER_CRITICAL()    // no-op
-  #define DCD_EXIT_CRITICAL()     // no-op
-#endif
-
-#endif // TUSB_DWC2_CRITICAL_H_